Tampa Weather Guide: Rainy Season, Cool Fronts, Hurricanes and Evacuation

NWS Tampa Bay defines the rainy season for West Central Florida, which includes Tampa, as May 25 to October 10, so by mid October Tampa has just passed the official end (NWS Tampa Bay, Florida Thunderstorm Season).

The Ruskin forecast office set those dates after studying local thunderstorm climatology; Southwest Florida runs a little longer, May 15 to October 15 (NWS Tampa Bay). The office notes the start can arrive abruptly in some years and take weeks in others, so the rainy season in Tampa is a transition more than a single date.

Tampa forecasters watch precipitable water, the moisture in a column of air up to about 30,000 feet: during the thunderstorm season typical values across West Central and Southwest Florida run around 1.7 to 1.9 inches, and when they fall to around 1.5 inches or less, storm coverage is usually very limited (NWS Tampa Bay). The Tampa seasonal patterns guide follows the year month by month, from June sea breeze storms to the dry winter.

Tampa's first night below 60 degrees comes on a mean date of October 19, in records that go back to 1890, but the lasting cool down usually waits until November (NWS Tampa Bay, fall cool down dates).

The Tampa Bay office explains why fall feels late: dew points in the mid 60s to mid 70s keep overnight lows in the same range until a front passes, and the first shot of cooler, drier air usually lasts only a day or two (NWS Tampa Bay). Coastal areas take longer to drop below 60 because the warm water keeps temperatures higher.

Fall 2025 ran late in Tampa: the first sub 60 degree low came October 30, eleven days after the long term mean, and the first reading below 55 came November 10 (NWS Tampa Bay). A Tampa calendar built on the averages should allow for that spread.

Freezing temperatures are possible into Central and South Florida, Tampa included, during any winter, whatever the El Nino or La Nina phase (NWS Tampa Bay, ENSO and winter weather).

NWS Tampa Bay lists notable freezes in 1835, 1886, 1894, 1901, 1905, 1918, 1934, 1957, 1962 and 1980 (NWS Tampa Bay, Preserve America). The Tampa Bay forecast office says the cause differs by phase. In El Nino winters, freezes usually come from cold air dragged south behind low pressure systems crossing Florida; in La Nina winters the main cause is radiational cooling under clear skies and calm winds (NWS Tampa Bay, ENSO and winter weather). The office has counted clear, partly cloudy and cloudy days at Tampa since the winter of 1970-71, and those tables show more cloudy days in El Nino winters and more clear days in La Nina winters.

Long term averages from the same Tampa Bay office give three to six freezing days a winter across inland Central Florida and only about one over Southwest Florida, with places farther north on the Nature Coast, such as Inverness and Bushnell, near 12 (NWS Tampa Bay). The Tampa snow and freezes guide covers the coldest mornings on record in Tampa and its snowfall history.

The hurricane NWS Tampa Bay ranks as the most destructive for the area since 1848 struck on October 25, 1921, pushing storm surge into downtown Tampa and Tarpon Springs (NWS Tampa Bay, Hurricane of 1921).

The 1921 storm came ashore at Tarpon Springs with winds near 120 mph, a category 3, while the strongest winds measured in Tampa reached 75 mph and the Tampa Weather Bureau recorded 8.53 inches of rain. Waves from the bay were almost breaking in the streets of Ybor City, and vessels such as the steamer Favorite were smashed against the docks (NWS Tampa Bay). The NWS page gives two surge figures, up to 11 feet in its overview and about 10.5 feet for Tampa Bay in its statistics table. The storm it is measured against is the hurricane of September 24, 1848, first on the office's list of Tampa Bay hurricanes (NWS Tampa Bay, Preserve America).

Two recent storms brought the threat close to Tampa Bay. On September 10, 2017, National Hurricane Center advisory 46 on Hurricane Irma placed Tampa Bay under a Storm Surge Warning and forecast 5 to 8 ft of surge from Ana Maria Island to Clearwater Beach, including Tampa Bay (NHC Irma Advisory 46). On October 9, 2024, Hurricane Milton made landfall as a category 3 near Siesta Key, south of Tampa Bay, and NOAA counted 46 tornadoes and rain totals of 10 to 15 inches (NOAA, 2024 hurricane season).

Each storm has its own Tampa guide: the Great Gale of 1848, the 1921 Tampa Bay hurricane and Hurricane Irma (2017), while the Tampa historical storm impacts guide sets them beside Milton and other surge and flood events on Tampa Bay.

Evacuation zones in Tampa are set by Hillsborough County, whose Hurricane Evacuation Assessment Tool, HEAT, helps residents determine whether they are in one of five zones, A through E (Hillsborough County, Find Evacuation Information).

HEAT searches by address, owner name or parcel, and the Hillsborough County map colors Zone A red, Zone B orange, Zone C yellow, Zone D green and Zone E purple (Hillsborough County). The county posts separate 2025 and 2026 zone maps plus 2025 versus 2026 comparison maps, with close ups for Thonotosassa, Apollo Beach and Town 'N Country; the page was last modified July 1, 2026. With 2026 maps posted, a Tampa household that looked up its zone in an earlier year has reason to look again. Evacuation calls go out through HCFL Alert, the county's mass notification system.

The City of Tampa runs its own channel, Alert Tampa: texting TAMPAREADY to 888-777 signs up for alerts, and TAMPALISTA gets them in Spanish (City of Tampa, Hurricane Information). The same Tampa page links the HART Emergency Evacuation Bus Route Map, special needs shelter registration, the TECO outage map and Hurricane Re-entry Information. The Atlantic hurricane season runs from June 1 to November 30 (NOAA). The Tampa hurricane season guide covers shelters, surge risk and the preparation steps in full.

Seven Tampa weather guides go deeper, and the NWS Tampa Bay Area office at 2525 14th Ave. SE in Ruskin, (813) 645-2323, issues the forecasts and warnings behind them (NWS Tampa Bay).

Last verified: October 14, 2026, on the National Weather Service Tampa Bay, Hillsborough County and City of Tampa websites. Hillsborough County posts 2026 evacuation zone maps, and the HEAT lookup is the current word for any address (Hillsborough County HEAT).